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`mmap` doesn't *always* cause undefined behavior; it depends on the
details of how you use it.
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Co-authored-by: Josh Triplett <josh@joshtriplett.org>
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Co-authored-by: Josh Triplett <josh@joshtriplett.org>
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Co-authored-by: Josh Triplett <josh@joshtriplett.org>
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Introduce `OwnedFd` and `BorrowedFd`, and the `AsFd` trait, and
implementations of `AsFd`, `From<OwnedFd>` and `From<T> for OwnedFd`
for relevant types, along with Windows counterparts for handles and
sockets.
Tracking issue:
- <https://github.com/rust-lang/rust/issues/87074>
RFC:
- <https://github.com/rust-lang/rfcs/blob/master/text/3128-io-safety.md>
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Split critical edge targeting the start block
Fixes #88043.
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freebsd arm64 add supported sanitizers.
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Unbox mutexes, condvars and rwlocks on hermit
[RustyHermit](https://github.com/hermitcore/rusty-hermit) provides now movable synchronization primitives and we are able to unbox mutexes and condvars.
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Prevent double panic when handling incremental fingerprint mismatch
When an incremental fingerprint mismatch occurs, we debug-print
our `DepNode` and query result. Unfortunately, the debug printing
process may cause us to run additional queries, which can result
in a re-entrant fingerprint mismatch error.
To avoid a double panic, this commit adds a thread-local variable
to detect re-entrant calls.
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Rollup of 10 pull requests
Successful merges:
- #87818 (Fix anchors display in rustdoc)
- #87983 (Use more accurate spans when proposing adding lifetime to item)
- #88012 (Change WASI's `RawFd` from `u32` to `c_int` (`i32`).)
- #88031 (Make `BuildHasher` object safe)
- #88036 (Fix dead code warning when inline const is used in pattern)
- #88082 (Take into account jobs number for rustdoc GUI tests)
- #88109 (Fix environment variable getter docs)
- #88111 (Add background-color on clickable definitions in source code)
- #88129 (Fix dataflow graphviz bug, make dataflow graphviz modules public)
- #88136 (Move private_unused.rs test to impl-trait)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix anchors display in rustdoc
Fixes https://github.com/rust-lang/rust/issues/87611 (it simplifies the positioning and fix the background).
r? `@camelid`
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Move private_unused.rs test to impl-trait
This test was added to fix this issue #55124 which is about impl traits but not related with type alias impl traits.
r? `@oli-obk`
`@bors` rollup=always
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Fix dataflow graphviz bug, make dataflow graphviz modules public
I'm working on a rustc plugin that uses the dataflow framework for MIR analysis. I've found the graphviz utilities extremely helpful for debugging. However, I had to fork the compiler to expose them since they're currently private. I would appreciate if they could be made public so I can build against a nightly instead of a custom fork. Specifically, this PR:
* Makes public the `rustc_mir::dataflow::framework::graphviz` module.
* Makes public the `rustc_mir::util::pretty::write_mir_fn` function.
Here's a concrete example of how I'm using the graphviz module: https://github.com/willcrichton/flowistry/blob/97b843b8b06b4004fbb79b5fcfca3e33c7143bc0/src/slicing/mod.rs#L186-L203
Additionally, this PR fixes a small bug in the diff code that incorrectly shows the updated object as the old object.
r? `@ecstatic-morse`
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Add background-color on clickable definitions in source code
Someone suggested to add a decoration on clickable elements in the source code pages:
The idea is to not disturb the reading while telling the reader "you can click on this one", which is why it's not a text decoration.
What do you think `@rust-lang/rustdoc` ?
r? `@Nemo157`
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Fix environment variable getter docs
`@RalfJung` pointed out a number of errors and suboptimal choices I made in my documentation for #86183. This PR should (hopefully) fix the problems they've identified.
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Take into account jobs number for rustdoc GUI tests
Fixes #88054.
r? `@Mark-Simulacrum`
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Fix dead code warning when inline const is used in pattern
Fixes #78171
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Make `BuildHasher` object safe
Resolves #87991
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r=alexcrichton
Change WASI's `RawFd` from `u32` to `c_int` (`i32`).
WASI previously used `u32` as its `RawFd` type, since its "file descriptors"
are unsigned table indices, and there's no fundamental reason why WASI can't
have more than 2^31 handles.
However, this creates myriad little incompability problems with code
that also supports Unix platforms, where `RawFd` is `c_int`. While WASI
isn't a Unix, it often shares code with Unix, and this difference made
such shared code inconvenient. #87329 is the most recent example of such
code.
So, switch WASI to use `c_int`, which is `i32`. This will mean that code
intending to support WASI should ideally avoid assuming that negative file
descriptors are invalid, even though POSIX itself says that file descriptors
are never negative.
This is a breaking change, but `RawFd` is considerd an experimental
feature in [the documentation].
[the documentation]: https://doc.rust-lang.org/stable/std/os/wasi/io/type.RawFd.html
r? `@alexcrichton`
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Use more accurate spans when proposing adding lifetime to item
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Fix anchors display in rustdoc
Fixes https://github.com/rust-lang/rust/issues/87611 (it simplifies the positioning and fix the background).
r? `@camelid`
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Matthew's work on improving NLL's "higher-ranked subtype error"s
This PR rebases `@matthewjasper's` [branch](https://github.com/matthewjasper/rust/tree/nll-hrtb-errors) which has great work to fix the obscure higher-ranked subtype errors that are tracked in #57374.
These are a blocker to turning full NLLs on, and doing some internal cleanups to remove some of the old region code.
The goal is so `@nikomatsakis` can take a look at this early, and I'll then do my best to help do the changes and followup work to land this work, and move closer to turning off the migration mode.
I've only updated the branch and made it compile, removed a warning or two.
r? `@nikomatsakis`
(Here's the [zulip topic to discuss this](https://rust-lang.zulipchat.com/#narrow/stream/122657-t-compiler.2Fwg-nll/topic/.2357374.3A.20improving.20higher-ranked.20subtype.20errors.20via.20.2386700) that Niko wanted)
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Update cargo
8 commits in b51439fd8b505d4800a257acfecf3c69f81e35cf..e96bdb0c3d0a418e7fcd7fbd69be08abf830b4bc
2021-08-09 18:40:05 +0000 to 2021-08-17 22:58:47 +0000
- Support using rustbot to ping the Windows group (rust-lang/cargo#9802)
- Show information about abnormal `fix` errors. (rust-lang/cargo#9799)
- Bump jobserver. (rust-lang/cargo#9798)
- Render build-std web links as hyperlinks (rust-lang/cargo#9795)
- Teach cargo to failfast on recursive/corecursive aliases (rust-lang/cargo#9791)
- Fix value-after-table error with profiles. (rust-lang/cargo#9789)
- Fix plugin registrar change. (rust-lang/cargo#9790)
- Ability to specify the output name for a bin target different from the crate name (rust-lang/cargo#9627)
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Remove box syntax from compiler and tools
Removes box syntax from the compiler and tools. In #49733, the future of box syntax is uncertain and the use in the compiler was listed as one of the reasons to keep it. Removal of box syntax [might affect the code generated](https://github.com/rust-lang/rust/pull/49646#issuecomment-379219615) and slow down the compiler so I'd recommend doing a perf run on this.
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Forbid `!` from being used in `asm!` output
Fixes #87802
r? `@Amanieu`
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